Database migration for enforcing course uniqueness

diff --git a/karmaworld/apps/courses/migrations/0002_auto__add_unique_course_school_name_instructor_name.py b/karmaworld/apps/courses/migrations/0002_auto__add_unique_course_school_name_instructor_name.py
new file mode 100644 (file)
index 0000000..df39e55
--- /dev/null
+++ b/karmaworld/apps/courses/migrations/0002_auto__add_unique_course_school_name_instructor_name.py
@@ -0,0 +1,51 @@
+# -*- coding: utf-8 -*-
+import datetime
+from south.db import db
+from south.v2 import SchemaMigration
+from django.db import models
+
+
+class Migration(SchemaMigration):
+
+    def forwards(self, orm):
+        # Adding unique constraint on 'Course', fields ['school', 'name', 'instructor_name']
+        db.create_unique('courses_course', ['school_id', 'name', 'instructor_name'])
+
+
+    def backwards(self, orm):
+        # Removing unique constraint on 'Course', fields ['school', 'name', 'instructor_name']
+        db.delete_unique('courses_course', ['school_id', 'name', 'instructor_name'])
+
+
+    models = {
+        'courses.course': {
+            'Meta': {'ordering': "['-file_count', 'school', 'name']", 'unique_together': "(('school', 'name', 'instructor_name'),)", 'object_name': 'Course'},
+            'academic_year': ('django.db.models.fields.IntegerField', [], {'default': '2013', 'null': 'True', 'blank': 'True'}),
+            'created_at': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
+            'desc': ('django.db.models.fields.TextField', [], {'max_length': '511', 'null': 'True', 'blank': 'True'}),
+            'file_count': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'instructor_email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'null': 'True', 'blank': 'True'}),
+            'instructor_name': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'school': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['courses.School']"}),
+            'slug': ('django.db.models.fields.SlugField', [], {'max_length': '150', 'null': 'True'}),
+            'updated_at': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.utcnow'}),
+            'url': ('django.db.models.fields.URLField', [], {'max_length': '511', 'null': 'True', 'blank': 'True'})
+        },
+        'courses.school': {
+            'Meta': {'ordering': "['-file_count', '-priority', 'name']", 'object_name': 'School'},
+            'alias': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            'facebook_id': ('django.db.models.fields.BigIntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'file_count': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'location': ('django.db.models.fields.CharField', [], {'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'priority': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'slug': ('django.db.models.fields.SlugField', [], {'max_length': '150', 'null': 'True'}),
+            'url': ('django.db.models.fields.URLField', [], {'max_length': '511', 'blank': 'True'}),
+            'usde_id': ('django.db.models.fields.BigIntegerField', [], {'null': 'True', 'blank': 'True'})
+        }
+    }
+
+    complete_apps = ['courses']
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